netdev - [PATCH net-next 2/8] selftests: lib.sh: Add PING_COUNT to allow sending configurable amount of packets

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Date:   Tue, 21 Dec 2021 16:49:43 +0200
From:   Amit Cohen <amcohen@...dia.com>
To:     <netdev@...r.kernel.org>
CC:     <davem@...emloft.net>, <kuba@...nel.org>, <mlxsw@...dia.com>,
        <idosch@...dia.com>, Amit Cohen <amcohen@...dia.com>,
        Petr Machata <petrm@...dia.com>
Subject: [PATCH net-next 2/8] selftests: lib.sh: Add PING_COUNT to allow sending configurable amount of packets

Currently `ping_do()` and `ping6_do()` send 10 packets.

There are cases that it is not possible to catch only the interesting
packets using tc rule, so then, it is possible to send many packets and
verify that at least this amount of packets hit the rule.

Add `PING_COUNT` variable, which is set to 10 by default, to allow tests
sending more than 10 packets using the existing ping API.

Signed-off-by: Amit Cohen <amcohen@...dia.com>
Reviewed-by: Petr Machata <petrm@...dia.com>
---
 tools/testing/selftests/net/forwarding/lib.sh | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/net/forwarding/lib.sh b/tools/testing/selftests/net/forwarding/lib.sh
index dfd827b7a9f9..7da783d6f453 100644
--- a/tools/testing/selftests/net/forwarding/lib.sh
+++ b/tools/testing/selftests/net/forwarding/lib.sh
@@ -20,6 +20,7 @@ NETIF_TYPE=${NETIF_TYPE:=veth}
 NETIF_CREATE=${NETIF_CREATE:=yes}
 MCD=${MCD:=smcrouted}
 MC_CLI=${MC_CLI:=smcroutectl}
+PING_COUNT=${PING_COUNT:=10}
 PING_TIMEOUT=${PING_TIMEOUT:=5}
 WAIT_TIMEOUT=${WAIT_TIMEOUT:=20}
 INTERFACE_TIMEOUT=${INTERFACE_TIMEOUT:=600}
@@ -1111,7 +1112,8 @@ ping_do()
 
 	vrf_name=$(master_name_get $if_name)
 	ip vrf exec $vrf_name \
-		$PING $args $dip -c 10 -i 0.1 -w $PING_TIMEOUT &> /dev/null
+		$PING $args $dip -c $PING_COUNT -i 0.1 \
+		-w $PING_TIMEOUT &> /dev/null
 }
 
 ping_test()
@@ -1132,7 +1134,8 @@ ping6_do()
 
 	vrf_name=$(master_name_get $if_name)
 	ip vrf exec $vrf_name \
-		$PING6 $args $dip -c 10 -i 0.1 -w $PING_TIMEOUT &> /dev/null
+		$PING6 $args $dip -c $PING_COUNT -i 0.1 \
+		-w $PING_TIMEOUT &> /dev/null
 }
 
 ping6_test()
-- 
2.31.1